Question 1

Identify each labelled part on the illustration of the Lac operon.  
-transcription termination site

Accepted Answer

The answer of Identify each labelled part on the illustration...

Question 2

Eukaryotic genes are organized into operons.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following determines which genes are transcribed?

Accepted Answer

A)  posttranscriptional regulation 
B)  transcriptional regulation 
C)  translational regulation 
D)  posttranslational regulation 
A)  posttranscriptional regulation 
B)  transcriptional regulation 
C)  translational regulation 
D)  posttranslational regulation

Question 4

Many eukaryotic operons are subject to numerous regulatory mechanisms.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following determines the types of mRNA that are available to ribosomes?

Accepted Answer

A)  translational regulation 
B)  posttranslational regulation 
C)  transcriptional regulation 
D)  posttranscriptional regulation 
A)  translational regulation 
B)  posttranslational regulation 
C)  transcriptional regulation 
D)  posttranscriptional regulation

Question 6

Match each term with its definition.
-transcriptional regulation

Accepted Answer

A) regulatory protein that activates the expression of an operon's genes 
B) interfering RNA molecules originally encoded by nuclear DNA 
C) process of controlling the expression of genes that takes place at the DNA level 
D) regulatory protein that prevents an operon's genes from being expressed 
E) inhibition of transcription via DNA methylation
F)interfering RNA molecules associated with some viral life cycles
G)tumour comprising cells that invade and disrupt the surrounding tissues
H)increases expression of an operon's genes
I)cluster of prokaryotic genes and their associated DNA regulatory sequences
J)tumour comprising undifferentiated cells that stay together in a single mass
K)spread of malignant cells through the blood or lymphatic system
L)removes a nucleosome from DNA to expose a promoter 
A) regulatory protein that activates the expression of an operon's genes 
B) interfering RNA molecules originally encoded by nuclear DNA 
C) process of controlling the expression of genes that takes place at the DNA level 
D) regulatory protein that prevents an operon's genes from being expressed 
E) inhibition of transcription via DNA methylation
F)interfering RNA molecules associated with some viral life cycles
G)tumour comprising cells that invade and disrupt the surrounding tissues
H)increases expression of an operon's genes
I)cluster of prokaryotic genes and their associated DNA regulatory sequences
J)tumour comprising undifferentiated cells that stay together in a single mass
K)spread of malignant cells through the blood or lymphatic system
L)removes a nucleosome from DNA to expose a promoter

Question 7

Match each term with its definition.
-malignant

Accepted Answer

A) regulatory protein that activates the expression of an operon's genes 
B) interfering RNA molecules originally encoded by nuclear DNA 
C) process of controlling the expression of genes that takes place at the DNA level 
D) regulatory protein that prevents an operon's genes from being expressed 
E) inhibition of transcription via DNA methylation
F)interfering RNA molecules associated with some viral life cycles
G)tumour comprising cells that invade and disrupt the surrounding tissues
H)increases expression of an operon's genes
I)cluster of prokaryotic genes and their associated DNA regulatory sequences
J)tumour comprising undifferentiated cells that stay together in a single mass
K)spread of malignant cells through the blood or lymphatic system
L)removes a nucleosome from DNA to expose a promoter 
A) regulatory protein that activates the expression of an operon's genes 
B) interfering RNA molecules originally encoded by nuclear DNA 
C) process of controlling the expression of genes that takes place at the DNA level 
D) regulatory protein that prevents an operon's genes from being expressed 
E) inhibition of transcription via DNA methylation
F)interfering RNA molecules associated with some viral life cycles
G)tumour comprising cells that invade and disrupt the surrounding tissues
H)increases expression of an operon's genes
I)cluster of prokaryotic genes and their associated DNA regulatory sequences
J)tumour comprising undifferentiated cells that stay together in a single mass
K)spread of malignant cells through the blood or lymphatic system
L)removes a nucleosome from DNA to expose a promoter

Question 8

Identify each labelled part of this illustration of eukaryotic DNA.  
-proximal promoter region

Accepted Answer

The answer of Identify each labelled part of this illustration...

Question 9

Identify each labelled part of this illustration of eukaryotic DNA.  
-enhancer

Accepted Answer

The answer of Identify each labelled part of this illustration...

Question 10

What is the single most important stage when regulating eukaryotic gene expression?

Accepted Answer

A)  RNA interference 
B)  translational regulation 
C)  degradation of mRNA 
D)  initiation of transcription 
A)  RNA interference 
B)  translational regulation 
C)  degradation of mRNA 
D)  initiation of transcription

Question 11

Suppose that an E. coli has a mutation in its lac operon such that the Lac repressor could NOT bind the operator, even in the absence of lactose. What would be the result in terms of the function of the operon?

Accepted Answer

A)  The lac operon would be transcribed, but at a high level. 
B)  The lac operon would be expressed only when lactose was present. 
C)  There would be no real impact on lac operon expression. 
D)  The lac operon would be transcribed, but at a low level. 
A)  The lac operon would be transcribed, but at a high level. 
B)  The lac operon would be expressed only when lactose was present. 
C)  There would be no real impact on lac operon expression. 
D)  The lac operon would be transcribed, but at a low level.

Question 12

Identify each labelled part of this illustration of eukaryotic DNA.  
-activators

Accepted Answer

The answer of Identify each labelled part of this illustration...

Question 13

What is the essential difference in development of bees of different gender?

Accepted Answer

A)  females develop from unfertilized diploid eggs 
B)  males develop from unfertilized diploid eggs 
C)  females develop from unfertilized haploid eggs 
D)  males develop from unfertilized haploid eggs 
A)  females develop from unfertilized diploid eggs 
B)  males develop from unfertilized diploid eggs 
C)  females develop from unfertilized haploid eggs 
D)  males develop from unfertilized haploid eggs

Question 14

Which type of RNA is produced from genes that come from outside the cell?

Accepted Answer

A)  mRNA 
B)  miRNA 
C)  tRNA 
D)  siRNA 
A)  mRNA 
B)  miRNA 
C)  tRNA 
D)  siRNA

Question 15

Which of the following is the correct order in the regulation of gene expression in eukaryotes?

Accepted Answer

A)  transcriptional regulation 
B)  translational regulation 
C)  posttranscriptional regulation 
D)  posttranscriptional regulation. 
A)  transcriptional regulation 
B)  translational regulation 
C)  posttranscriptional regulation 
D)  posttranscriptional regulation.

Question 16

Which term refers to a cluster of genes transcribed into a single mRNA unit in the operon model?

Accepted Answer

A)  alpha genes 
B)  mRNA cluster 
C)  gene group 
D)  transcription unit 
A)  alpha genes 
B)  mRNA cluster 
C)  gene group 
D)  transcription unit

Question 17

Identify each labelled part on the illustration of the Lac operon.  
-lacY

Accepted Answer

The answer of Identify each labelled part on the illustration...

Question 18

Identify each labelled part on the illustration of the Lac operon.  
-regulatory gene

Accepted Answer

The answer of Identify each labelled part on the illustration...

Question 19

How does methylation regulate transcription?

Accepted Answer

A)  via the addition of a methyl group to cysteine bases of DNA 
B)  via the addition of a methyl group to cysteine residues on RNA polymerase II 
C)  via the addition of a methyl group to cytosine residues on RNA polymerase II 
D)  via the addition of a methyl group to cytosine bases of DNA 
A)  via the addition of a methyl group to cysteine bases of DNA 
B)  via the addition of a methyl group to cysteine residues on RNA polymerase II 
C)  via the addition of a methyl group to cytosine residues on RNA polymerase II 
D)  via the addition of a methyl group to cytosine bases of DNA

Question 20

Match each term with its definition.
-chromatin remodelling

Accepted Answer

A) regulatory protein that activates the expression of an operon's genes 
B) interfering RNA molecules originally encoded by nuclear DNA 
C) process of controlling the expression of genes that takes place at the DNA level 
D) regulatory protein that prevents an operon's genes from being expressed 
E) inhibition of transcription via DNA methylation
F)interfering RNA molecules associated with some viral life cycles
G)tumour comprising cells that invade and disrupt the surrounding tissues
H)increases expression of an operon's genes
I)cluster of prokaryotic genes and their associated DNA regulatory sequences
J)tumour comprising undifferentiated cells that stay together in a single mass
K)spread of malignant cells through the blood or lymphatic system
L)removes a nucleosome from DNA to expose a promoter 
A) regulatory protein that activates the expression of an operon's genes 
B) interfering RNA molecules originally encoded by nuclear DNA 
C) process of controlling the expression of genes that takes place at the DNA level 
D) regulatory protein that prevents an operon's genes from being expressed 
E) inhibition of transcription via DNA methylation
F)interfering RNA molecules associated with some viral life cycles
G)tumour comprising cells that invade and disrupt the surrounding tissues
H)increases expression of an operon's genes
I)cluster of prokaryotic genes and their associated DNA regulatory sequences
J)tumour comprising undifferentiated cells that stay together in a single mass
K)spread of malignant cells through the blood or lymphatic system
L)removes a nucleosome from DNA to expose a promoter

Exam 13: Regulation of Gene Expression

Identify each labelled part on the illustration of the Lac operon. -transcription termination site

Eukaryotic genes are organized into operons.

Which of the following determines which genes are transcribed?

Many eukaryotic operons are subject to numerous regulatory mechanisms.

Which of the following determines the types of mRNA that are available to ribosomes?

Match each term with its definition. -transcriptional regulation

Match each term with its definition. -malignant

Identify each labelled part of this illustration of eukaryotic DNA. -proximal promoter region

Identify each labelled part of this illustration of eukaryotic DNA. -enhancer

What is the single most important stage when regulating eukaryotic gene expression?

Suppose that an E. coli has a mutation in its lac operon such that the Lac repressor could NOT bind the operator, even in the absence of lactose. What would be the result in terms of the function of the operon?

Identify each labelled part of this illustration of eukaryotic DNA. -activators

What is the essential difference in development of bees of different gender?

Which type of RNA is produced from genes that come from outside the cell?

Which of the following is the correct order in the regulation of gene expression in eukaryotes?

Which term refers to a cluster of genes transcribed into a single mRNA unit in the operon model?

Identify each labelled part on the illustration of the Lac operon. -lacY

Identify each labelled part on the illustration of the Lac operon. -regulatory gene

How does methylation regulate transcription?

Match each term with its definition. -chromatin remodelling

Light and Life

The Cell: an Overview

Energy and Enzymes

Cell Membranes and Signaling

Cellular Respiration

Photosynthesis

Cell Cycles

Genetic Recombination

The Chromosomal Basis of Mendelian Inheritance

Genetic Linkage, Sex-Linkage, and Other Non-Mendelian Inheritance Mechanisms

DNA Structure, Replication, and Repair

Gene Structure Expression, and Mutation

Dna Technologies

Genomes

Evolution: the Development of the Theory

Microevolution: Changes Within Populations

Speciation and Macroevolution

Systematics and Phylogenetics: Revealing the Tree of Life

Humans and Evolution

Defining Life and Its Origins

Viruses, Viroids, and Prions: Infectious Biological Particles

Bacteria and Archaea

Protists

Fungi

Plants

Animals

Conservation of Biodiversity

Population Ecology

Species Interactions and Community Ecology

Ecosystems

Animal Behaviour

Organization of the Plant Body

Transport in Plants

Reproduction and Development in Flowering Plants

Plant Nutrition

Plant Signals and Responses to the Environment

Introduction to Animal Organization and Physiology

Animal Nutrition

Gas Exchange: the Respiratory System

Internal Transport: the Circulatory System

Regulation of the Internal Environment: Water, Solutes, and Temperature

Control of Animal Processes: Endocrine Control

Animal Reproduction

Control of Animal Processes: Neural Control

Muscles, Skeletons, and Body Movements

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